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SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY · 2013 · IF 1.977

Enhanced luminescence in SrMgAlxO17±δ:yMn4+ composite phosphors

Renping Cao,Kaniyarakkal N. Sharafudeen,Jianrong Qiu

Red-emitting SrMgAl x O 17±δ : y Mn 4+ composite phosphors ( x = 10–100; y = 0.05–4.0 mol%) are synthesized by solid-state reaction method in air. Addition of Al 2 O 3 leads to the formation of two concomitant phases, i.e., SrMgAl 10 O 17 and Al 2 O 3 phases in the composite phosphor. Red emission from Mn 4+ ions in the composite phosphors is greatly enhanced due to multiple scattering and absorption of excitation light between SrMgAl 10 O 17 and Al 2 O 3 phases. SrMgAl x O 17±δ : y Mn 4+ composite phosphors would be a promising candidate as red phosphor in the application of a 397 nm near UV-based W-LED.

CAS / MDL: 1633-05-2

研究领域: 材料科学 · 光学

✓ 已验证产品关联 DOI PubMed 高影响因子

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JOURNAL OF LUMINESCENCE · 2024 · IF 3.3

Solid solution structural engineering enhances the luminescence of SrMgAl10O17:Cr3+ for agricultural lighting

Yibiao Ma,Weifang Liao,Beibei Quan,Zihui Kong,Maxim S. Molokeev,Andrey Zolotov,Ming Cheng,Xiaoyan Chen,Zhi Zhou,Mao Xia

Lead-free non-rare earth oxide phosphors have attracted wide attention due to their environmental protection, sustainability, and potential to replace halides and fluorides in the field of plant lighting. Among them, the Cr 3+ -excited aluminate phosphor exhibits high brightness, high thermal stability, and far red to near-infrared (NIR) emission due to the influence of the crystal field strength (CFS). This property gives rise to a variety of strategies used to modulate the CFS, for example, single ion substitution, chemical unit co-substitution, etc. Here, we chose the substitution of a single ion, with [BaO6] gradually replacing [SrO6] to form a solid solution. Their structural characteristics and the local structure of Cr 3+ are studied and discussed. The device is packaged to evaluate the feasibility of the material for practical application. The prepared phosphor had a bright far-red light emission of 693 nm under blue light excitation, and this spectrum strongly matched the absorption of plant phytochrome P FR . This work provides the design principle of far red light emission activated by Cr 3+ aluminate solid solution, which can inspire further research on pc-LED lights for plant lighting.

CAS / MDL: 1344-28-1 513-77-9 1308-38-9 1309-48-4 1633-05-2

研究领域: 材料科学 · 植物学

✓ 已验证产品关联 DOI 高影响因子

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Enhanced luminescence in SrMgAlxO17±δ:yMn4+ composite phosphors

Solid solution structural engineering enhances the luminescence of SrMgAl10O17:Cr3+ for agricultural lighting